tl;dr:
Make sure you flash an LSI-9211 to IT firmware rev#14 to get it to work
with Linux and SSD trim. You may have to downgrade from newer firmware
to older firmware to get the card to work.

Finding a SATA III controller with more than one PCI-e lane
After a recent hardware issue I decided to upgrade my computer to
use new Intel 520 120MB SSD drives in RAID for improved
performance. The motherboard I use (an ASUS Rampage III
extreme) has a Marvel SATA III controller with two ports, but I
discovered that it is connected via only a single PCI-e lane
(each lane can do at most 400MB/sec*). This means that it
can't effectively support even a …

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